Two-dimensional airflow modeling underpredicts the wind velocity over dunes

Michelsen B, Strobl S, Ribeiro Parteli EJ, Pöschel T (2015)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Scientific Reports Nature Publishing Group: Open Access Journals - Option B

Publisher: Nature Publishing Group: Open Access Journals - Option B

Book Volume: 5

Article Number: 16572

DOI: 10.1038/srep16572

Abstract

We investigate the average turbulent wind field over a barchan dune by means of Computational Fluid Dynamics. We find that the fractional speed-up ratio of the wind velocity over the three-dimensional barchan shape differs from the one obtained from two-dimensional calculations of the airflow over the longitudinal cut along the dune's symmetry axis - that is, over the equivalent transverse dune of same size. This finding suggests that the modeling of the airflow over the central slice of barchan dunes is insufficient for the purpose of the quantitative description of barchan dune dynamics as three-dimensional flow effects cannot be neglected.

Authors with CRIS profile

Severin Strobl Lehrstuhl für Multiscale Simulation of Particulate Systems Eric Josef Ribeiro Parteli Lehrstuhl für Multiscale Simulation of Particulate Systems Thorsten Pöschel Lehrstuhl für Multiscale Simulation of Particulate Systems

Additional Organisation(s)

Exzellenz-Cluster Engineering of Advanced Materials

How to cite

APA:

Michelsen, B., Strobl, S., Ribeiro Parteli, E.J., & Pöschel, T. (2015). Two-dimensional airflow modeling underpredicts the wind velocity over dunes. Scientific Reports, 5. https://dx.doi.org/10.1038/srep16572

MLA:

Michelsen, Britt, et al. "Two-dimensional airflow modeling underpredicts the wind velocity over dunes." Scientific Reports 5 (2015).

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